PDCD1 and colorectal carcinoma: Cellular subtype analysis revealed that PDCD1 is primarily expressed in T, NK and ILCs (innate lymphocytes) (Figure 1A; combined cells “T, NK and ILCs” are indicated in Figure 1A as “TNKILC”), while IFNB1 is primarily expressed in myeloid cells (Figure 1B) in human colorectal carcinoma.